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Acording to a NASA web page 70% of the earth is covered by clouds. "Everyone knows what a cloud looks like, but scientists need to know what percentage of clouds cover the Earth everyday, in order to make their computer climate models and weather forecast computer models work better. ICESat [satellite] has provided the most accurate figure to date, and tells us that 70 percent of the world is cloud covered. Previous estimates ranged from 50 to 75 percent. "

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16y ago
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15y ago

I would make an educated guess at 10% (66% is water, 34% is land) 1/3 of that I would think is covered in trees.

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11y ago

About 70.8-71.13% of the Earth is covered by water.

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14y ago

100% of earths surface is covered, but are u talking with water or land?

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10y ago

About 70% of the earth's surface is covered with water. Ninety-seven percent of the water on the earth is salt water.

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11y ago

70% or two thirds.

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Q: What percentage of earths surface is covered?
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